And -- -- the latest on the investigation into the Boston Marathon bombing. The evidence is mounting against Joseph cars are nine even his brother -- who was killed in the gun battle with police. But no matter what proof the FBI may come up with the suspect's parents. -- America that's to blame here's ABC's Carol Roddy with the story. Tempers player. -- parents say they will never admit their sons are guilty I don't and I won't. Yeah they tried to paint a very different picture of their son -- -- the suspect who was killed on Friday denied reports that he had few friends. So it doesn't mean that he just did not -- and. Yeah cat whenever possible and liberalism liberalism that he had a regular. And that he had been radicalized by a mysterious convert to Islam they Misha. There was nothing not to like about me and nicest. V -- not. They expanded not think that. They insist their sons are being framed that photos placing them at the scene our doctor. -- -- -- They -- not anything. The parents revealed that Joseph -- the suspect who was captured is being fed through a tube after a severe injuries they say they are being allowed to visit him. The mother says she regrets bringing her family to the United States. My kids away from all women. The father denied tablet had comported with extremists during a six month stay in dog has done last year but he did say that they sometimes attended this a lot this mosque. Where a number of militants have also prayed. The father says he plans to visit Boston soon to claim top -- body the family doesn't know yet if they'll bury him in Russia or in the United States. Karen Friday at ABC news -- touched a lot -- is done. FBI investigators have revealed -- -- and I have Brothers made a spur of the moment decision to target New York's Times Square as well -- this news comes from their questioning of the injured. Joseph are on Sunday and was backed up by the man whose car Brothers hijacked Thursday night just hours after the FBI broadcast their images around the world. They discusses while driving around in his -- -- SUV. That they had hijacked after they shot and killed. And MIT police officers in Cambridge we don't know -- we wouldn't have been able to stop the terrorists have they arrived here from Boston. We're just thankful that we didn't have to find out that answer. Now officials say the Brothers had at least six bombs left to detonate including another pressure cooker bomb but their plan was derailed when they stop for gas and the car's owner escaped and called police.

This transcript has been automatically generated and may not be 100% accurate.

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